Abstract: Methods of profiling the nucleic acid composition of single cells and tools for same. The methods can include isolating a single cell in a liquid droplet, lysing the single cell in the liquid droplet to release template nucleic acid from the cell, amplifying the template nucleic acid in the liquid droplet to generate amplified nucleic acid, and detecting the amplified nucleic acid in the liquid droplet. The methods can be useful for profiling expression patterns and/or detecting genetic characteristics such as single nucleotide polymorphisms. The tools include nucleic acid logic gates, including polymerase-dependent logic gates. The logic gates can perform logical operations such as YES, NOT, AND, OR, AND-NOT, NOT-AND, NOT-OR, EXCLUSIVE-OR, EXCLUSIVE-NOR, and IMPLY. The tools also include microfluidic systems for performing the methods.

Abstract: Methods of profiling the nucleic acid composition of single cells and tools for same. The methods can include isolating a single cell in a liquid droplet, lysing the single cell in the liquid droplet to release template nucleic acid from the cell, amplifying the template nucleic acid in the liquid droplet to generate amplified nucleic acid, and detecting the amplified nucleic acid in the liquid droplet. The methods can be useful for profiling expression patterns and/or detecting genetic characteristics such as single nucleotide polymorphisms. The tools include nucleic acid logic gates, including polymerase-dependent logic gates. The logic gates can perform logical operations such as YES, NOT, AND, OR, AND-NOT, NOT-AND, NOT-OR, EXCLUSIVE-OR, EXCLUSIVE-NOR, and IMPLY. The tools also include microfluidic systems for performing the methods.

Abstract: Methods of profiling the nucleic acid composition of single cells and tools for same. The methods can include isolating a single cell in a liquid droplet, lysing the single cell in the liquid droplet to release template nucleic acid from the cell, amplifying the template nucleic acid in the liquid droplet to generate amplified nucleic acid, and detecting the amplified nucleic acid in the liquid droplet. The methods can be useful for profiling expression patterns and/or detecting genetic characteristics such as single nucleotide polymorphisms. The tools include nucleic acid logic gates, including polymerase-dependent logic gates. The logic gates can perform logical operations such as YES, NOT, AND, OR, AND-NOT, NOT-AND, NOT-OR, EXCLUSIVE-OR, EXCLUSIVE-NOR, and IMPLY. The tools also include microfluidic systems for performing the methods.

Abstract: Systems and methods for protein engineering. The systems include a sequence testing subsystem and a machine learning subsystem. The sequence testing subsystem is configured to express proteins and test the expressed proteins for a given property. The machine learning subsystem is configured to model the activities of a set of possible proteins in light of the properties of the tested proteins and provide one or more untested proteins in the set to the sequence testing subsystem for subsequent testing. The system can be run in an iterative fashion and be fully automated. Methods of using the systems are provided.